anderson



(No Model.)

0. A. ANDERSON.

ADJUSTABLE LOCKING DEVIGE F R GRAIN BIND-BBS.

No. 352,027. Patented Nov. 2,1886.-

UNITED STATES PATENT OFFICE.

CHARLES A. ANDERSON, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE MINNEAPOLIS HARVESTER WORKS, OF SAME PLACE.

ADJUSTABLE LOCKING DEVICE FOR GRAlN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 352,027 dated November 2,1886.

Application filed April 21, [886. Serial No.199.603.

To all whom it may concern.-

Be it known that I, CHARLES A. ANDERSON, of Minneapolis, Minnesota, have invented a certain Improvement in Adjustable Locking Devices for Grain-Binders, of which the following is a specification.

This improvement relates to the construction of the adjustable locking-arm which is employed for locking the main gear of a binder at the conclusion of each binding operation, and holding it against any tendency to move in a backward direction while thepackers are forming a new gavel preparatory to the repetition of the binding operation.

The invention consists in hanging the locking-arm upon an eccentric bushing which is mounted upon the pivot upon which the locking-arm is supported, and which may be fast ened to thelockingarm, in which case the said pivot will serve as the axis upon which the locking-arm rocks; or the eccentric bushing may be fastened to the said pivot, andv may thus itself constitute the axis upon which the locking-arm rocks. In eithercase/by loosening the fastening, the eccentric bushing maybe turned in either direction for the purpose of either lengthening or shortening the radial distance of the roller in the end of the arm which engages the locking-shoulder in the main gear.

The accompanying drawings illustrate the invention applied to a binder of the type shown and described in Letters. Patent of the United States N 0. 256,188, dated April 11, 1882, granted to John F. Appleby, and are as follows: I

Figure 1 is an elevation showing the locking-arm applied to the train of gearing for op erating the packers and the binding apparatus. Fig. 2 is a side view, and Fig. 3 a top view,of the locking-arm provided with a strap clamp for fastening the arm to the eccentric bushing. Figs. 4 and 5 are respectively an elevation and a section of the eccentric bushing employed in connection with the strapclamp shown in Figs. 2 and 3. Figs. 6 and 7 are respectively a side elevation and a section of the central portion of the locking-arm, hung upon the eccentric bushing, provided with a set-screw for fastening the bushing to the pivot .50 by which the locking-arm is supported.

In Fig. 1 of the drawings, the main gear (No model.)

A of the binder'is represented as just having completed its revolution, and as being locked against any tendency to move backward by the engagementin the cam-notch a of the roller b, pivotedin the end of the lockingarm B, the seating of the roller 6 in the notch 0. having been effected, in the usual manner, by the expansion of the spiral spring 0.

The locking-arm B is mounted upon the ec- 6o centric bushing D, to which the locking-arm may be fastened by means of the clampingband B and the clamping bolt and nut B, as illustrated in Figs. 1, 2, and 3 of the drawings, in which case the stud or pivot E serves as 55 the axis upon which the locking-arm rocks, and the adjustment of the locking-arm is effected by loosening the clamping-bolt B and turning the bushing D upon the stud E in either direction, as may be required, while holding the arm stationary, and then fastening the clamp upon the bushing, and therebyholding the locking-arm in the position to which it has been adjusted relatively to its axis of oscillation. The eccentric bushing may be provided with a laterally-projecting flange, d,the perimeter of which is polygonal, to'adapt it for engagement by a wrench when occasion arises for turning the bushingin the act of adjusting the locking-arm.

Instead of having the bushing fastened to the locking-arm, it may be fastened to the stud E, and may thus be made to serve as the axis upon which the locking-arm rocks. This may be effected,as shown in Figs. 6 and 7, by means of the set-screw F, which is inserted in a hole tapped through the bushing, so that its inner end may be made to bear upon the surface of. the stud E.

The employment of the eccentric bushing in 0 either of the ways illustrated provides for the adjustability of the locking-arm relatively to the main gear A without requiring the axis upon which the lockingarm rocks to be itself adjustable.

In the drawings the locking-arm is represented as being mounted upon the stud E, which is inalignment with the axis of the in termediate gear, E.

I claim as my invention+ 1. A device for preventing any backward movement of the main gear of a binderat the IOO end of the binding operation, consisting of a device for fastening the eccentric bushing D 10 locking-arm mounted upon an adjustable eein the required relation to the stud E and centric bushing supported upon a, fixed stud, locking-arm B, in combination with the main and a fastening device for fastening the eeeen gear A of the binder, substantially as de- 5 trie bushing, and thereby preserving the adscribed.

justment of the locking-arm relatively to the G. Al ANDERSON. main gear of the binder. \Vitnesses:

2. The loekingnrm B, the stud E, the ad- D. STRUXK,

justable eccentric bushing I), and a fastening G. H. SWINDELLs. 

